First Bay Tradition (or First Bay Area Tradition) was an architectural style from the period of the 1880s to early 1920s. Sometimes considered a regional interpretation of the Eastern Shingle Style, it came as a reaction to the classicism of Beaux-Arts architecture. Its characteristics included a link to nature, and use of locally sourced materials such as redwood. It included an emphasis on craftsmanship, volume, form, and asymmetry. The tradition was rooted in San Francisco, the greater Bay Area, and the East Bay. The Environmental Design Archives at the University of California, Berkeley house a repository of drawings and specifications associated with the tradition.